地铁环境下已建建筑的隔振研究

通过实测得到地铁运行引起某建筑物楼板的振动加速度,利用ANSYS有限元分析软件建立碟簧隔振支座以及上部结构的层间剪切模型,通过对比隔振前后结构的效应,分析碟簧隔振支座的隔振效果.研究表明设置碟簧支座可使上部建筑的竖向加速度明显减少.由此可见,在建筑物底部设置碟簧隔振支座具有显著的隔振效果.

Isolation vibration study of constructed building under metro environment

By obtaining the measured vibration acceleration on the floor of a building effected by the subway and using ANSYS finite element analysis software, this paper establishes a dish spring isolation bearing and an interlaminar shear model of the upper structure. And in comparison the frame structure with the frame isolated structure, an analysis of the influence on the isolating effect of dish spring isolation bearing is made. The studies have shown that setting the disc spring bearing can significantly reduce the building＇s vertical acceleration. Thus, setting the disc spring bearing at the bottom of the building has a significant isolation effect.